Cabinet
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Solution Overview
Problem
Commercial aviation faces challenges with heavy, costly metal trolleys used for transporting meal trays, which are difficult to clean and require extensive resource management, including energy-intensive manufacturing, storage, and hygiene concerns due to their bulkiness and metal composition.
Innovation Solution
A cabinet made from lightweight, reusable, water-repellent, fireproof, and smokeproof alveolate cardboard with a recyclable rolling system, pre-cut in a structured manner to form a compact, efficient transport container that can be easily assembled and disassembled, featuring a door and staged rail system for horizontal tray holding, and a thin isothermal film for temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal cabinets are used for transporting meal trays, then hygiene and durability are improved, but weight and manufacturing cost increase
Solution Approach 1:
The patent changes the material parameter from metal to cardboard, fundamentally altering the weight and hygiene properties. The cardboard is treated with water-repellent, fireproof, and smokeproof coatings to achieve hygiene standards comparable to metal while dramatically reducing weight.
Solution Approach 2:
The cabinet uses a composite structure combining cardboard base material with multiple functional coatings (water-repellent, fireproof, smokeproof layers). This composite approach maintains hygiene reliability while achieving lightweight properties.
2Strength
If metal cabinets are used for transporting meal trays, then durability is improved, but manufacturing cost and energy consumption increase
Solution Approach 1:
The patent changes the material parameter from metal to cardboard, fundamentally altering the cost and durability properties. The cardboard is treated with water-repellent, fireproof, and smokeproof coatings to achieve durability comparable to metal while dramatically reducing manufacturing cost and energy consumption.
Solution Approach 2:
The patent employs disposable cardboard cabinets that are inexpensive to manufacture and replace. Instead of durable metal cabinets requiring maintenance and cleaning circuits, these single-use cabinets eliminate the need for reprocessing, storage, and transport infrastructure, drastically reducing overall system cost.
3Strength
If traditional metal trolleys are used, then structural strength is improved, but storage efficiency and handling complexity increase
Solution Approach 1:
The patent segments the trolley into a lightweight cardboard cabinet body and a separate metal rolling system. This segmentation allows the cabinet to be optimized for hygiene and weight while the rolling system provides necessary mobility, simplifying overall handling and storage.
Solution Approach 2:
The disposable cardboard cabinet eliminates the need for complex cleaning and maintenance circuits required by traditional metal trolleys. The cabinet is used once and then discarded, dramatically simplifying the handling and storage infrastructure needed.
4Duration of action of stationary object
If metal cabinets are used, then reusability is improved, but cleaning and storage circuit complexity increase
Solution Approach 1:
The patent employs disposable cardboard cabinets that are used once and then discarded. This approach eliminates the complex cleaning and storage circuits required for reusable metal cabinets, as each cabinet is pre-hygienized and requires no maintenance or reprocessing.
Solution Approach 2:
The patent extracts the food-containing cabinet function from the reusable metal trolley framework. By making the cabinet disposable and separate from the rolling system, it removes the need for cleaning and maintenance circuits while preserving the transport function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution significantly reduces weight, manufacturing costs, and the complexity of handling and storage, while ensuring hygiene standards are met, with a drastic reduction in reprocessing, storage, and transport cycles, and maintains a bacteriologically clean circuit, achieving a substantial energy savings and efficient use of resources.
Implementation Method 1
water repellent, fireproof and smokeproof alveolate cardboard material
Implementation Method 2
water repellent, fireproof and smokeproof alveolate cardboard material
Implementation Method 3
the side of the cardboard, once folded, can be covered inside the panels with a thin isothermal film, which thus makes it possible to keep the meal trays warm or cold
Data Source
AI summary
The present invention provides a cabinet (2) intended for transporting and distributing meal trays in aircraft, for example to provide a trolley (1) which can be reinforced with a frame (3). The cabinet is made of a fireproof, water-repellent, alveolate cardboard material, the cabinet comprising an upper face, a lower face, two side faces, a rear face, a front face forming a door, which are made of a single piece of cardboard. The invention also provides for the use of a flat sheet of cardboard, pre-cut in a structured manner, to form a cabinet in a single piece when folded and assembled, preferably of parallelepipedal shape, the sheet of cardboard having a thickness of 6 mm to 10 mm, and a method of manufacturing a cabinet comprising the provision of such a sheet of cardboard, to form a cabinet.